Police say a Tennessee woman is facing a felony charge after going on Snapchat to brag about the grotesque stunt she was pulling on her Tennessee State University roommate.

According to the Columbus (Georgia) Ledger-Inquirer, Tierni Williams revealed online that she had been surreptitiously filling the water bottles of her roommate with water from the toilet.

She was later charged with adulteration of food, liquid or pharmaceuticals with bodily injury. If convicted of the felony, Williams faces three to six years in prison.

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An affidavit that omits the roommate’s identity claimed the unnamed woman reported health concerns over several weeks, including weight loss, lack of appetite and diarrhea. She reportedly had no idea what was causing her symptoms.

Then, she found out what Williams was doing. Williams reportedly posted a video that showed her using a foam cup to pull water from the toilet and proceeding to pour the liquid into the victim’s water bottles.

“The toilet water would possibly cause the sort of infection that might cause a diarrhea illness,” said Dr. William Schaffner, Infectious Disease director at Vanderbilt University Medical Center.

“The water that goes into the toilet is municipal water and is very clean, but the flush doesn’t remove absolutely everything and there could be residual bacteria or viruses left in the bowl of the toilet,” Schaffner added. “I would think it’s more yucky than seriously harmful.”

In addition to any police charges, Williams could also face punishment form the college, according to the New York Daily News.

“In general, students who engage in conduct that may violate criminal laws and implicate the University’s Student Conduct Code will be subject to the University’s student disciplinary process, including sanctions ranging from immediate ‘interim suspension’ to expulsion from the University,” Tennessee State University said in a statement.

Jack Davis is a free-lance writer. Writing as "Rusty" Davis, he is a Spur Award-nominated writer whose first two novels, “Wyoming Showdown” and “Black Wind Pass” were published by Five Star Publishing.

Jack Davis is a free-lance writer. Writing as "Rusty" Davis, he is a Spur Award-nominated writer whose first two novels, “Wyoming Showdown” and “Black Wind Pass” were published by Five Star Publishing. His next novel, "Rakeheart," will be published in 2018. Jack can be reached at jackwritings1@gmail.com.